|Publication number||US5623942 A|
|Application number||US 08/590,531|
|Publication date||Apr 29, 1997|
|Filing date||Jan 24, 1996|
|Priority date||Jan 24, 1996|
|Publication number||08590531, 590531, US 5623942 A, US 5623942A, US-A-5623942, US5623942 A, US5623942A|
|Inventors||Cornelius N. Pestes, Larry L. Pestes|
|Original Assignee||Mml Diagnostics|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (10), Referenced by (43), Classifications (10), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This invention relates to a swab for collecting cell samples, and in particular to such a swab for use in collecting samples from the male urethra.
In order to diagnose certain urinary tract or genital diseases or to perform certain types of DNA testing, it is necessary to collect cell samples from the patient's urethra. This process has inherent difficulties with respect to males due to the small size of the urethra and the sensitivity surrounding its opening. First of all the probe end of the swab shaft must be small enough that when covered with the fiber tip that is used to capture cells it will fit comfortably in the urethra. At the same time the handle at the other end of the swab shaft must be sufficiently large to allow it to be firmly gripped. In addition, the swab shaft must be ductile enough so that it will not break and yet be stiff enough that it will not flex excessively during use.
This has been accomplished in the past with a two piece swab shaft. A hollow cylindrical handle has a smaller diameter stainless steel probe inserted into one end. The probe is heat-sealed to the handle. A fiber tip is then attached to the end of the probe. In order to prevent contamination of the collected cells during transportation to the laboratory, a swab of this type is partially inserted into a specimen tube and the protruding portion of the handle is broken off. The handle is scored to provide for breakage at the desired point. In the past this has been accomplished by rotating the handle under a blade.
Because of the cost of the stainless steel probe and the amount of hand assembly work, the prior art swabs are relatively expensive. In addition, carbon in the stainless steel probe may affect the results of DNA testing of samples collected with the swab.
The subject invention overcomes the foregoing problems associated with the prior art swabs by providing a unitary elongate glass filled nylon shaft which has a constant diameter circular cross-sectioned handle at one end and a tapered circular cross-sectioned probe at the other end. The shaft is between 5 and 20 percent fiberglass by volume and preferably is 10 percent fiberglass by volume. A fiber tip is located at the end of the probe to collect cell samples.
Preferably the probe covers approximately 25 percent of the overall length of the shaft and the diameter of the end of the probe is approximately one-third of the diameter of the handle. In the preferred embodiment, the handle has a diameter of approximately 0.100 inches and the end of the probe has a diameter of approximately 0.035 inches. The probe is made by injection molding and a score line is formed in the handle approximately at the midpoint of the shaft, as part of the molding process.
As a result of its shape and material, the subject swab provides similar size, strength and stiffness characteristics as the prior art two piece swabs at far less cost and with an inert probe.
The foregoing and other objectives, features, and advantages of the invention will be more readily understood upon consideration of the following detailed description of the invention, taken in conjunction with the accompanying drawings.
FIG. 1 is a side elevation view of a swab embodying the subject invention.
FIG. 2 is a side elevation view of a prior art swab.
FIG. 3 is a detail view of the probe end of the swab of FIG. 1 in cross-section and at an enlarged scale.
Referring to FIG. 1 of the drawings, a swab 10 for collecting cell samples from a male urethra comprises an elongate unitary shaft 12. The shaft preferably is circular in cross-section and includes a constant diameter handle 14, designated as "h" in the drawings, and a tapered probe 16, designated "p" in the drawings. The preferred embodiment of the shaft has an overall length of slightly less than six inches and the probe covers about one quarter of this length. The preferred diameter of the handle is approximately 0.100 inches and the distal extremity 18 of the probe has a diameter of approximately 0.035 inches. While the foregoing configuration is preferred in order to provide an instrument that is properly balanced for ease of use, a handle size that is easy to hold and will not inadvertently break or unnecessarily bend, a considerable amount of dimensional variation is acceptable.
The above described general shape permits injection molding of a one-pieced shaft from a particular material that provides the necessary combination of ductility, stiffness and tip size. As described above and can be seen in FIG. 2 of the drawings, the prior art achieves this combination with a two-piece configuration that is far more costly to manufacture. In addition, by injection molding the shaft, a break line 20 can be formed as part of the molding process rather than having to cut the line as a separate step in the manufacturing process.
The preferred material for the shaft is fiberglass filled nylon. In order to provide sufficient ductility that the shaft will not break in use and still be stiff enough to prevent it from being bent during its intended use, the fiberglass must constitute 5 to 20 percent of the volume of the shaft. Ideally, the fiberglass would constitute 10 percent of the shaft.
After the shaft is constructed, a fiber tip can be applied to its end in the conventional manner to complete the swab.
The terms and expressions which have been employed in the foregoing specification are used therein as terms of description and not of limitation, and there is no intention, in the use of such terms and expressions, of excluding equivalents of the features shown and described or portions thereof, it being recognized that the scope of the invention is defined and limited only by the claims which follow.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2839049 *||Mar 25, 1954||Jun 17, 1958||Maclean Kenneth S||Abrasive cytologic brush|
|US4952204 *||Aug 10, 1988||Aug 28, 1990||Gam-Med Packaging Corporation||Dry handle swab assembly and unit|
|US4981143 *||Aug 13, 1987||Jan 1, 1991||Anne Company Limited||Cell sampler|
|US5022408 *||Apr 23, 1990||Jun 11, 1991||Mohajer Reza S||Combination exo/endocervical sampler|
|US5031635 *||Aug 27, 1990||Jul 16, 1991||Accu-Med Corporation||Plastic molded biological sample collection swab|
|US5084005 *||May 14, 1990||Jan 28, 1992||Becton, Dickinson And Company||Swab for collection of biological samples|
|US5096062 *||Jun 19, 1991||Mar 17, 1992||Hoffmann-La Roche Inc.||Transport system for shipping microbiological samples|
|US5121752 *||Nov 16, 1990||Jun 16, 1992||Canna Cheral J||Apparatus and method for self-obtaining PAP smears|
|US5425377 *||Aug 25, 1994||Jun 20, 1995||Caillouette; James C.||pH measurement of body fluid|
|US5522795 *||Jan 25, 1993||Jun 4, 1996||United States Surgical Corporation||Endoscopic swab device|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6010462 *||May 28, 1998||Jan 4, 2000||Becton Dickinson And Company||Blister style culture transport device and method for using the same|
|US6413087||Feb 24, 2000||Jul 2, 2002||3M Innovative Properties Company||Packaged applicator assembly|
|US6716396||Nov 1, 2000||Apr 6, 2004||Gen-Probe Incorporated||Penetrable cap|
|US6723289||May 18, 2001||Apr 20, 2004||Gen-Probe Incorporated||Fluid transfer device|
|US6806094 *||Mar 29, 2001||Oct 19, 2004||Gen-Probe Incorporated||Method for removing a fluid substance from a collection device|
|US7648680||Oct 26, 2004||Jan 19, 2010||Gen-Probe Incorporated||Method for accessing the contents of a closed vessel containing a specimen retrieval device|
|US7691332||Oct 9, 2007||Apr 6, 2010||Gen-Probe Incorporated||Penetrable cap|
|US7795036||Oct 18, 2007||Sep 14, 2010||Gen-Probe Incorporated||Method for accessing the contents of a closed collection device|
|US7824922||Mar 26, 2009||Nov 2, 2010||Gen-Probe Incorporated||Method for removing a fluid substance from a closed system|
|US7927549||Oct 30, 2007||Apr 19, 2011||Gen-Probe Incorporated||Method for accessing the contents of a closed collection device with a modified pipette tip|
|US8038967||Apr 23, 2010||Oct 18, 2011||Gen-Probe Incorporated||Method for accessing the contents of a closed vessel containing a specimen retrieval device|
|US8052944||Apr 1, 2010||Nov 8, 2011||Gen-Probe Incorporated||Penetrable cap|
|US8057762||Dec 2, 2010||Nov 15, 2011||Gen-Probe Incorporated||Penetrable cap|
|US8206662||Oct 29, 2007||Jun 26, 2012||Gen-Probe Incorporated||Collection device including a penetrable cap having an absorbent pile fabric|
|US8211710||Oct 30, 2007||Jul 3, 2012||Dickey Kathleen A||Method for accessing the contents of a closed collection device|
|US8334145||Jul 21, 2008||Dec 18, 2012||Gen-Probe Incorporated||Pierceable cap having spaced-apart grooves|
|US8535621||Jun 17, 2008||Sep 17, 2013||Gen-Probe Incorporated||Penetrable cap having rib structures|
|US8573072||Aug 18, 2009||Nov 5, 2013||Gen-Probe Incorporated||Method for removing a fluid substance from a sealed collection device|
|US8685347||Nov 15, 2011||Apr 1, 2014||Gen-Probe Incorporated||Penetrable cap|
|US20010039058 *||May 18, 2001||Nov 8, 2001||Iheme Mordi I.||Fluid transfer device|
|US20020013539 *||Jul 26, 2001||Jan 31, 2002||David Hung||Methods and devices for diagnosis of precancer and cancer in breast milk ducts|
|US20030143192 *||Oct 1, 2002||Jul 31, 2003||Human Genome Sciences Inc.||Chemokine beta-7|
|US20030207463 *||Apr 18, 2003||Nov 6, 2003||Iheme Mordi I.||Method for obtaining the contents of a fluid-holding vessel|
|US20040105786 *||Nov 17, 2003||Jun 3, 2004||Anderson Bruce W.||Collection device|
|US20040152205 *||Jan 23, 2004||Aug 5, 2004||Anderson Bruce W.||Method for removing a fluid substance from a collection device|
|US20040219537 *||May 2, 2003||Nov 4, 2004||Fenrich Richard K.||Epidermal collection method, kit, and device|
|US20050020937 *||Jul 23, 2003||Jan 27, 2005||West Virginia University||Method for detecting pathogenic agents|
|US20050059161 *||Oct 26, 2004||Mar 17, 2005||Gen-Probe Incorporated||Method for obtaining a fluid sample|
|US20080047371 *||Oct 29, 2007||Feb 28, 2008||Gen-Probe Incorporated||Penetrable cap having an absorbent material and method of using the same|
|US20080072690 *||Oct 9, 2007||Mar 27, 2008||Gen-Probe Incorporated||Penetrable cap|
|US20080118988 *||Oct 18, 2007||May 22, 2008||Gen-Probe Incorporated||Method for accessing the contents of a closed collection device|
|US20080134808 *||Oct 30, 2007||Jun 12, 2008||Gen-Probe Incorporated||Method for accessing the contents of a closed collection device with a modified pipette|
|US20080152545 *||Mar 6, 2008||Jun 26, 2008||Gen-Probe Incorporated||Assembly containing a specimen retrieval device|
|US20080245163 *||Jun 17, 2008||Oct 9, 2008||Gen-Probe Incorporated||Penetrable cap having rib structures|
|US20100190215 *||Apr 1, 2010||Jul 29, 2010||Gen-Probe Incorporated||Penetrable cap|
|US20120165699 *||Jul 22, 2009||Jun 28, 2012||Javanbakhsh Esfandiari||Method and Apparatus for Collecting and Preparing Biological Samples for Testing|
|US20130288343 *||Jan 16, 2012||Oct 31, 2013||Ge Healthcare Uk Limited||Biological sample holder and method of assembling a storage device|
|USRE45194||Nov 8, 2013||Oct 14, 2014||Gen-Probe Incorporated||Penetrable cap|
|EP1795263A1||Mar 8, 2002||Jun 13, 2007||Gen-Probe Incorporated||Method for removing a fluid from a a vessel comprising a penetrable cap|
|EP1990092A1||Mar 8, 2002||Nov 12, 2008||Gen-Probe Incorporated||Penetrable cap|
|EP1997558A1||May 12, 2000||Dec 3, 2008||Gen-Probe Incorporated||Collection device containing specimen-retrieval device|
|WO2000069389A2||May 12, 2000||Nov 23, 2000||Gen-Probe Incorporated||Penetrable cap with inner apex and related fluid transfer device|
|WO2017005795A1 *||Jul 6, 2016||Jan 12, 2017||Crea Ip B.V.||Ophthalmic scraper device and method of making the same|
|U.S. Classification||600/572, D24/119, 600/562|
|International Classification||A61B17/32, A61B10/00, A61B10/02|
|Cooperative Classification||A61B10/02, A61B10/0241, A61B2017/320012|
|Mar 4, 1996||AS||Assignment|
Owner name: MML DIAGNOSTICS, OREGON
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PESTES, CORNELIUS N.;PESTES, LARRY L.;REEL/FRAME:007835/0768
Effective date: 19960228
|May 25, 2000||FPAY||Fee payment|
Year of fee payment: 4
|Oct 25, 2004||FPAY||Fee payment|
Year of fee payment: 8
|Oct 22, 2008||FPAY||Fee payment|
Year of fee payment: 12